If you're looking to upgrade to a 4K HDR screen, and gaming is a priority, then JB has a decent deal on a 55" Samsung for $1000.
The MU6100 is closer to Samsung's entry-level offerings, but despite the cheaper build quality the screen still has solid contrast, 4K HDR support, and most importantly, good input lag for gaming. RTINGS measure the MU6100's response time at just over 20ms when playing 4K HDR content at 60Hz, while the response time for 1080p HDR content was a fraction faster.
That's pretty decent as far as TV's go. And given that JB are selling the MU6100 for $1000, that's a good price point. If you're interested, you can check out the deal and the rest of the specs over at JB Hi-Fi.
There's offers on larger and smaller TVs today as well, including a 60" TCL P20US for $1000. Neither TV will have amazing speakers given the price point, however, so if you do decide to pull the plug, make sure you look around for a good soundbar to go with it.